Control unit for a hi-fidelity system



FIG. 1 is a front elevational view of a control unit for a hi-fidelity system according to my design;

FIG. 2 is a right side elevational view of the control unit for a hi-fidelity system;

FIG. 3 is a top plan view of the control unit for a hi-fidelity system;

FIG. 4 is a left side elevational view of the control unit for a hi-fidelity system;

FIG. 5 is a rear elevational view of the control unit for a hi-fidelity system; and,

FIG. 6 is a bottom plan view of the control unit for a hi-fidelity system. 

The ornamental design for a control unit for a hi-fidelity system, as shown and described. 